Oniţiu has ten chess problems in FIDE Albums.
First in Problemist Fairy Chess Supplement (vol.1 no.12 Jun 1932 p.74) problems 452-455 he gives tours with ten three-unit lines.
The editor T. R. Dawson states: "V. Onitiu writes to me that he has examined all possible cases, some 1330 in all, and is convinced that only six of them admit tours, namely Dr Hogrefe's , mine, and the following four new ones.
Second in Fairy Chess Review (vol.4 no.3 Dec 1939 p.43 problem 4135, with solution in no.6 Jun 1940 p.93.)
The editor states: "VO notes that he examined 144 dispositions of the squares, all that are possible for diametral symmetry, and this is the only case leading to a tour.